The framing of that is incorrect. It suggests that this is a matter of individual choice. It is, in fact, a structural problem.
Pay equity only addresses one element of the structural problem, which is that the more gendered work is, the more it is devalued and the less it's paid, particularly in female-dominated workplaces like care, etc. The more female it is, the lower the pay. It's recognized as an entirely discriminatory valuation of women's contributions to the economy.
That gap we've talked about exists right across the economy, in every sector. Of 500 occupations tracked by Statistics Canada, women are paid less in 469. This suggests there are other structural drivers, such as lack of access to child care, the difficulty of unionizing in female-dominated workplaces, precarious work, the ways in which women predominate in precarious work, etc.
There are a number of different drivers that need different responses. The pay equity act addresses one aspect—gendering of jobs and low pay—and this is an opportunity to strengthen that act. This isn't a matter of getting rid of it, but amending it so it's actually effective.